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Finding the Third Proportional to 156.50 and 167

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Solution

The third proportional to 156.50 and 167 is: 178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.50 : 167 = 167 : x
  2. Step 2: Convert to fraction form
    156.50/167 = 167/x
  3. Step 3: Cross multiply
    156.50x = 167 × 167
  4. Step 4: Simplify right side
    156.50x = 27,889
  5. Step 5: Solve for x
    x = 27,889/156.50
  6. Step 6: Final answer
    x = 178.20

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.